DURATION OF THE AUSTENITIZATION AND THE CAVITATION EROSION RESISTANCE TO STAINLESS STEEL X5CRNI18-10

1 Salcianu Laura Cornelia
Co-authors:
1 BORDEASU Ilare 1 MITELEA Ion 1 Crăciunescu Corneliu Marius
Institution:
1 „Polytechnica“ Universty of Timisoara, Timisoara, Romania, EU, salcianu.laura@yahoo.com, ilarica59@gmail.com, ion.mitelea@upt.ro, craciunescucm@yahoo.com
Conference:
24th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, June 3rd - 5th 2015
Proceedings:
Proceedings 24th International Conference on Metallurgy and Materials
Pages:
839-844
ISBN:
978-80-87294-58-1
ISSN:
2694-9296
Published:
12th January 2015
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
123 views / 37 downloads
Abstract

The cavitation erosion resistance of the stainless steel was studied with ultrasonic vibration equipment, at a frequency of 20 kHz and oscillation amplitude of 50 μm. Varying the holding duration at the constant heating temperature, causes changes both in terms of the not dissolved austenite, chemical compounds (carbides, inter-metallic phases), phases proportion, as well as in the size of the crystal grains.The cavitation test results were compared with those obtained by the standard OH12NDL steel used in the manufacturing of hydraulic turbine blades Kaplan of the Power Plant Iron Gates I, Romania. Optical and electronic metallographic examinations and hardness tests have shown, that by heat treatment is obtained a fine and homogeneous microstructure with a high resistance to plastic deformation which provides an improvement in the cavitation eroosion behavior.

Keywords: cavitation erosion, austenitic stainless steel, heat treatment duration

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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